“Maybe he’ll just have to sing something himself. He probably thinks he has a great voice,” Menzel told Vanity Fair.

It was just a few short weeks ago that President-Elect Donald Trump stood before a crowd in Grand Rapids, Michigan, and announced, “We don’t need Jay Z or Beyoncé,” denouncing the numerous celebrity endorsementsHillary Clinton had received throughout her campaign. “We don’t need Jon Bon Jovi. We don’t need Lady Gaga. All we need is great ideas to make America great again.”

Unfortunately, “great ideas” can’t perform at his inauguration. With a month and change to go until that cold day in January, Trump and his team have reportedly struggled to pin down A-list musical performers for the occasion.

“I think it’s karma, baby,” Idina Menzel told Vanity Fair Wednesday night at Sting and Trudie Styler’s biannual benefit Christmas concert, Baby It’s Cold Outside (but Getting Warmer), at Carnegie Hall. “I mean, look: All the artists in the world got up and tried to get our girl [Hillary Clinton] elected, and it still didn’t happen, so we’re all still trying to recover from that.”

While celebrities like Beyoncé, Kelly Clarkson, James Taylor, and Aretha Franklin helped ring in the 2008 and 2012 inaugurations for President Barack Obama, Trump has thus far only confirmed 16-year-old opera star Jackie Evancho for his. The Wrap broke the news Wednesday that the president-elect and his team have allegedly gone so far as offering ambassadorships, large sums of cash, and “even plush diplomatic posts” for singers and bookers who’ll join him January 20 in Washington, D.C. And still no dice.

Menzel posited that Trump might just take matters into his own hands, should no additional performers materialize. “Maybe he’ll just have to sing something himself. He probably thinks he has a great voice; he thinks he does everything great.”

The looming Trump presidency provided an unspoken weight at Sting and Styler’s concert and gala, particularly in light of Trump’s December 7 appointment of climate-change denier and Oklahoma attorney general Scott Pruitt to head the U.S. Environmental Protection Agency. Produced in part by Revlon and featuring performances from Sting, Menzel, Bruce Springsteen, James Taylor, Darlene Love, Ronnie Spector, Vittorio Grigolo, and a last-minute surprise “Do You Hear What I Hear?” closer from Jennifer Nettles, the holiday benefit concert aids Sting and Styler’s Rainforest Fund, which supports and protects hundreds of thousands of indigenous people across three continents and 23 countries. This year marked the first time the fund has directed its efforts to indigenous peoples living in America. Styler stood with the Dakota Access Pipeline protesters at Standing Rock, and presented Native American representatives from these protests as honored guests during Wednesday night’s proceedings.

By Kevin Mazur/Getty Images.

Looking stunning in a bright, festive red ensemble, Menzel took to the stage to sing and flirt with Taylor on “Baby, It’s Cold Outside.” She was also joined by the Manhattan Girls Chorus for Frozen’s Oscar-winning “Let It Go.”

Menzel again referenced the White House when asked about other big stages she’s had the challenge—and pleasure—of performing on. She’s sung twice for the Obamas, breaking out “Defying Gravity” in 2010 at In Performance at the White House: A Broadway Celebration and again earlier this year at the annual Easter Egg Roll, where she sang the National Anthem. But say Trump were to give her a ring about that inauguration of his? She’d let that go too.

“I got to meet the Obamas and sing at the White House on two different occasions,” she said. “I’m good for the rest of my life.”